1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef ANDROID_SENSOR_INTERFACE_H 18 #define ANDROID_SENSOR_INTERFACE_H 19 20 #include <gui/Sensor.h> 21 #include <utils/RefBase.h> 22 23 // --------------------------------------------------------------------------- 24 25 namespace android { 26 // --------------------------------------------------------------------------- 27 class SensorDevice; 28 class SensorFusion; 29 30 class SensorInterface : public VirtualLightRefBase { 31 public: ~SensorInterface()32 virtual ~SensorInterface() {} 33 34 virtual bool process(sensors_event_t* outEvent, const sensors_event_t& event) = 0; 35 36 virtual status_t activate(void* ident, bool enabled) = 0; 37 virtual status_t setDelay(void* ident, int handle, int64_t ns) = 0; 38 virtual status_t batch(void* ident, int handle, int /*flags*/, int64_t samplingPeriodNs, 39 int64_t maxBatchReportLatencyNs) = 0; 40 41 virtual status_t flush(void* /*ident*/, int /*handle*/) = 0; 42 43 virtual const Sensor& getSensor() const = 0; 44 virtual bool isVirtual() const = 0; 45 virtual void autoDisable(void* /*ident*/, int /*handle*/) = 0; 46 }; 47 48 class BaseSensor : public SensorInterface { 49 public: 50 BaseSensor(const sensor_t& sensor); 51 BaseSensor(const sensor_t& sensor, const uint8_t (&uuid)[16]); 52 53 // Not all sensors need to support batching. batch(void * ident,int handle,int,int64_t samplingPeriodNs,int64_t maxBatchReportLatencyNs)54 virtual status_t batch(void* ident, int handle, int, int64_t samplingPeriodNs, 55 int64_t maxBatchReportLatencyNs) override { 56 if (maxBatchReportLatencyNs == 0) { 57 return setDelay(ident, handle, samplingPeriodNs); 58 } 59 return -EINVAL; 60 } 61 flush(void *,int)62 virtual status_t flush(void* /*ident*/, int /*handle*/) override { 63 return -EINVAL; 64 } 65 getSensor()66 virtual const Sensor& getSensor() const override { return mSensor; } autoDisable(void *,int)67 virtual void autoDisable(void* /*ident*/, int /*handle*/) override { } 68 protected: 69 SensorDevice& mSensorDevice; 70 Sensor mSensor; 71 }; 72 73 // --------------------------------------------------------------------------- 74 75 class HardwareSensor : public BaseSensor { 76 public: 77 HardwareSensor(const sensor_t& sensor); 78 HardwareSensor(const sensor_t& sensor, const uint8_t (&uuid)[16]); 79 80 virtual ~HardwareSensor(); 81 82 virtual bool process(sensors_event_t* outEvent, 83 const sensors_event_t& event); 84 85 virtual status_t activate(void* ident, bool enabled) override; 86 virtual status_t batch(void* ident, int handle, int flags, int64_t samplingPeriodNs, 87 int64_t maxBatchReportLatencyNs) override; 88 virtual status_t setDelay(void* ident, int handle, int64_t ns) override; 89 virtual status_t flush(void* ident, int handle) override; isVirtual()90 virtual bool isVirtual() const override { return false; } 91 virtual void autoDisable(void *ident, int handle) override; 92 }; 93 94 class VirtualSensor : public BaseSensor 95 { 96 public: 97 VirtualSensor(); isVirtual()98 virtual bool isVirtual() const override { return true; } 99 protected: 100 SensorFusion& mSensorFusion; 101 }; 102 103 104 // --------------------------------------------------------------------------- 105 }; // namespace android 106 107 #endif // ANDROID_SENSOR_INTERFACE_H 108